--- boost/tools/build/v2/build/configure.jam	2012-03-28 15:57:17.000000000 -0400
+++ boost/tools/build/v2/build/configure.jam	2012-04-05 18:01:00.000000000 -0400
@@ -172,7 +172,7 @@
     local toolset = [ property.select <toolset> : $(properties) ] ;
     local toolset-version-property = "<toolset-$(toolset:G=):version>" ;
     local relevant = [ property.select <target-os> <toolset> $(toolset-version-property)
-      <address-model> <architecture>
+      <address-model> <architecture> <variant>
       : $(properties) ] ;
     local ps = [ property-set.create $(relevant) ] ;        
     local t = [ targets.current ] ;